[LLVMbugs] [Bug 9251] New: Support -fno-delete-null-pointer-checks

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=9251

           Summary: Support -fno-delete-null-pointer-checks
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Linux kernel uses it, because it want gcc to play smart and delete NULL pointer
checks and introduce security bugs that way (NULL pointer deref doesn't always
crash kernel, especially if someone managed to map page 0).

clang should probably support it too.

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